Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /mnt/volume_lon1_01/backend/admin/vendor/lcobucci/jwt/test/functional/HmacTokenTest.php:21 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/lcobucci/jwt/test/functional/HmacTokenTest.php on line 21